Re: Conditional Properties

D'oh, think I got caught out by GWT's optimization. Apparently it
doesn't mention the new permutations until you add rules that force a
genuinely new set of code to be generated. Now I've added some extra
replacement rules that use the new property it seems to be working,
creating the 8 permutations as expected.

-Shaun

On Jan 26, 5:27 pm, Shaun <fas...@gmail.com> wrote:
> Hi,
>
> I started a thread a while back asking for some way to support sub-
> types of properties (e.g. for mobile Safari/Android).  I got a quick
> response saying that Conditional Properties were the answer, and that
> they were in GWT 2.0.
>
> Thread:http://groups.google.com/group/google-web-toolkit/browse_thread/threa...
>
> Conditional Properties:http://code.google.com/p/google-web-toolkit/wiki/ConditionalProperties
>
> Now GWT 2.0 is out, I'm trying to get conditional properties to work
> but not having much luck.  I added the following to my gwt.xml file.
> It happily compiles but says it's only compiling the usual 6
> permutations rather than the expected 8.  In fact, even if I remove
> the set-property declaration, I still only get 6 permutations so maybe
> I'm doing something wrong here.
>
>   <define-property name="mobile.user.agent"
> values="android,iphone,none" />
>   <property-provider name="mobile.user.agent"><![CDATA[
>   {
>     var ua = window.navigator.userAgent.toLowerCase();
>     if (ua.indexOf('android') != -1) { return 'android'; }
>     if (ua.indexOf('iphone') != -1) { return 'iphone'; }
>     return 'none';
>   }
>   ]]></property-provider>
>
>   <!-- Constrain the value for non-webkit browsers -->
>   <set-property name="mobile.user.agent" value="none" >
>     <none>
>       <when-property-is name="user.agent" value="safari" />
>     </none>
>   </set-property>
>
> Has anyone managed to get this to work?  Does anyone know if
> conditional properties were indeed implemented or whether they were
> shelved for some reason?
>
> Thanks,
>
> -Shaun

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